Well, the Hijri date 21 Shaban 1374 corresponds to the Gregorian date Thursday, 14 April 1955. This date lies in the eighth month of the Hijri year 1374 AH, which is Shaban of 1374 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1374/08/21 is calculated using the Umm Al-Qura calendar and the sighting of the moon. One thing to remember is that this Arabic date may occur on different Gregorian date depending upon the region and country and obviously the moon.
If you are still not sure about the date then you can use our Arabic date converter.
The following is the conversion of the Gregorian date 14 April 1955 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Shaban 1374 AH to its equivalent Gregorian date.
يُولِجُ ٱلَّيْلَ فِى ٱلنَّهَارِ وَيُولِجُ ٱلنَّهَارَ فِى ٱلَّيْلِ ۚ وَهُوَ عَلِيمٌۢ بِذَاتِ ٱلصُّدُورِ
He causeth the night to pass into the day, and He causeth the day to pass into the night, and He is knower of all that is in the breasts.
Surah Al-Hadid(57:6)